Abstract: A modular environmental assembly includes a frame and wall structure selectively coupled to form a landscaping design. The assembly includes channels in the wall structures to facilitate plumbing or other routing of external features. A base pan is included to capture and appropriately route moisture away from the assembly. The assembly is generated by forming wall structures through reverse molds using injected foam. The wall structures may be cut or modified to include channels and scored to prepare for surface treatments such as natural stone.

Abstract: A portable, modular water garden structure, suitable for the containment of water and adapted to be readily assembled and disassembled, is provided. The structure first comprises a base unit, formed of a lightweight sturdy material, having an exposed outer surface, a top side, perimeter walls and an underside. The base unit is further characterized as having on its top side a generally centrally located depressed area suitable for use as a tub capable of accommodating an appropriate quantity of water. A moisture-proof flexible membrane is situated directly over the exposed outer surface area of the base unit, and extending over the tub and at least a portion of the upper edge of the perimeter walls. A layer of moisture- and flex-resistant material is formed over the moisture-proof membrane, covering the membrane and at least covering the exposed outside surfaces of the perimeter walls and any exposed outer surfaces of the base, so as to give a generally natural-looking appearance to said modular structure.